12
177-999H
This section explains how to disassemble and inspect all easily-
serviceable parts of the pump.
Note: The numbers in parentheses are the Reference
Numbers shown in the Parts Section of the manual.
Fluid End Service
Inlet Check Valve Disassembly
a.
See Fluid End Parts View.
Remove eight bolts (92) around
inlet retainer plate (87).
b. Remove inlet retainer plate and three inlet retainer plugs (85)
with assembled O-rings (86).
c. Check O-rings and inlet retainer plugs for wear. Replace
if worn. Lubricate new O-rings with petroleum jelly or
lubricating gel. Each inlet retainer plug is attached to inlet
retainer plate with two screws (88).
d. Inspect inlet retainer plate for warping or wear around
inlet ports. Look for corrosion, scale and wear. If wear is
excessive, replace inlet retainer plate. Clean inlet retainer
plate of any scale and corrosion with Scotch-Brite™ pad
or fine emery cloth. Wash after cleaning. To check if inlet
retainer plate is warped, place a straightedge across it. A
warped inlet retainer plate should be replaced.
e. Remove three inlet check valve cartridges (99,101-103,100)
with check valve extraction tool. Tool is included in Wanner
Tool Kit.
CAUTION - For Inlet Carbide Valve Assemblies (when used).
Inlet Carbide Valve Assemblies are a matched set
(consisting of items 102 and 103) and must be installed
together. Failure to install Inlet Carbide Valve Assemblies
as a matched set will cause pump damage.
f. Inspect each of three check valve cartridges for wear and
leakage at seat. Replace inlet check valve cartridges as
needed.
g. Using a light, visually inspect diaphragms through inlet ports.
If diaphragms appear abnormal or damaged, remove and
replace as instructed in Diaphragm Parts Disassembly.
Outlet Check Valve Disassembly
Note: Removal of Inlet Check Valves first will make removal
of Outlet Check Valves easier.
a. Remove two eyebolts (14) and six cap screws (92) around
discharge retainer plate (89).
b. Remove discharge retainer plate with assembled outlet
valve port plugs (89), backup rings (93), O-rings (94), and
outlet valve retainers (95).
c. Check outlet valve port plugs, backup rings, O-rings, and
outlet valve retainers for wear. Replace if worn. Lubricate
new O-rings with petroleum jelly or lubricating gel. Outlet
valve port plugs are attached to discharge retainers plate
with two screws (88).
d. Inspect discharge retainer plates for warping or wear around
T100 Series Medium - Fluid End Service
discharge ports. Look for corrosion, scale and wear. If
wear is excessive, replace discharge retainer plate. Clean
discharge retainer plates of any scale and corrosion with
Scotch-Brite™ pad or fine emery cloth. Wash after cleaning.
To check if discharge retainer plate is warped, place a
straightedge across it. A warped discharge retainer plate
should be replaced.
e. Remove three outlet check valve cartridges (98,99,101-
103,100) with check valve extraction tool. Tool is included
in Wanner Tool Kit.
CAUTION - For Inlet Carbide Valve Assemblies (when used).
Inlet Carbide Valve Assemblies are a matched set
(consisting of items 102 and 103) and must be installed
together. Failure to install Inlet Carbide Valve Assemblies
as a matched set will cause pump damage.
f. Inspect each of three check valve cartridges for wear and
leakage at seat. Replace outlet check valve cartridges as
needed.
Outlet Check Valve Assembly
a. Reinstall three outlet check valve cartridges (98,99,101-
103,100).
b. Reinstall discharge retainer plate (89) with assembled outlet
valve port plugs (89) with two screws (88) [Torque to 75
in-lbs (8 N-m)], backup rings (93), O-rings (94), and outlet
valve retainers (95); using six cap screws (92) and two
eyebolts (14). (Check illustration) Hand thread cap screws
and eyebolts.
c. Tighten cap screws from opposing corners to opposing
corners of discharge retainer plates. Torque to 300 ft-lbs
(407 N-m).
d. Tighten eyebolts with crow bar or hammer.
Inlet Check Valve Assembly
a. Reinstall three inlet check valve cartridges (99,101-103,100).
b. Reinstall inlet retainer plate (87) and inlet retainer
plugs (85) with two screws (88) and assembled O-rings (86).
Use eight bolts (92) to fasten inlet retainer plate. Hand
thread bolts, then tighten from inner to outer.
See Manifold
Assembly Torque Sequence Diagram.
Torque to 300 ft-lbs
(407 N-m).
Drain Plug
a. Remove and replace drain plug (96) and O-ring (97) as
needed. Torque drain plug with O-ring to 40 ft-lbs (54 N-m).
Apply Loctite nickel anti-seize lubricant to thread and chamfer
of plug, with coverage on O-ring.
